Adblock - After using it for a while, it becomes impossible to NOT use it, and still retain focus. Every page contains something that is fighting for your atten

Adblock - After using it for a while, it becomes impossible to NOT use it, and still retain focus. Every page contains something that is fighting for your attention when it's not in use. Firebug - Incredible client-side development tool. Show anchors - Reveals anchors (<a> tag) in the page, making it easy to make more precise links into pages. Tamper data - Makes it possible to modify browser requests before submitting them to the server. Great addition to Firebug as a development tool.